Astell & Kern
AK HC4 Portable USB DAC
$240.00 USDFeatures
3.5mm, 4.4mm Dual Output
AKM AK4493S
DAR (Digital Audio Remaster)
Supports iOS devices
Interchangeable Cable (Type-C / Lightning Cable Included)
Supported UAC1.0 (For Gaming System)
Roon Tested
What's in the Box?
Warranty
Building upon the success of its predecessors, the HC3 and HC2, the HC4 sets a new standard by combining both a balanced and unbalanced headphone jack into a single device. With previous versions offering either a single 3.5mm (unbalanced) or 4.4mm (balanced) headphone jack, the HC4 now provides the versatility of both options. Featuring an AK4493S DAC, the HC4 delivers pristine audio quality characterized by exceptional clarity, detail, and resolution. A notable enhancement in the HC4 model is the introduction of a detachable cable design, allowing users to switch connector types as needed for added convenience. Equipped with a USB type-C connector and support for UAC1.0, the HC4 headphone amplifier caters to various gaming scenarios and ensures seamless connectivity across devices. Whether you're an audiophile seeking uncompromising sound quality or a gamer looking for immersive audio experiences, the Astell&Kern HC4 offers the perfect blend of performance and versatility in a sleek and portable package.
Dragon Cable Recommendation: We recommend pairing the Astell&Kern HC4 Portable USB DAC with our popular Black Dragon USB Audio Cable. The Black Dragon USB cable utilizes our single crystal UP-OCC copper construction to provide you with the best possible digital bus transmission. Our Black Dragon USB cable will bring an extraordinary amount of detail and resolution to your hi-fi system. The Black Dragon USB cable is designed to transfer digital audio from your source device (like a computer, phone, tablet, or digital audio player) to a USB-capable DAC. It is built to USB Audio specs. The Black Dragon USB Cable is meant for audio data transfer only - meaning that this cable should not be used for high-speed data transmission (via external hard drives). Because of the high-quality materials and cable geometry, Dragon USB cables greatly reduce stock USB cable issues such as packet loss and jitter.
Features:
- 3.5mm, 4.4mm Dual Output
- AKM AK4493S
- DAR (Digital Audio Remaster)
- Supports iOS devices
- Interchangeable Cable (Type-C / Lightning Cable Included)
- Supported UAC1.0 (For Gaming System)
- Roon Tested
AK HC4: Big Sound in a Small Package
Astell&Kern introduces the HC4, their latest Hi-Fi USB DAC cable, promising an unparalleled audio experience on smartphones and PCs worldwide. Praised by audiophiles and media alike, the HC4 headphone amp offers exceptional sound quality in a compact size. Building on the success of its predecessors, the HC4 enhances audio performance across various scenarios with its dual output headphone jacks, catering to a wide range of IEMs and headphones. Equipped with the AK4493S DAC chip and Digital Audio Remaster (DAR) technology, the HC4 brings true Hi-Fi sound previously exclusive to Astell&Kern's digital audio players (DAPs) to a wider audience. Experience Hi-Fi USB Audio like never before with the Astell&Kern HC4.
Ultra-high resolution sound from AKM AK4493s DAC
To achieve the highest audio quality available with a USB DAC, the AK HC4 is the first USB Cable DAC of this size to incorporate an AKM DAC. AKM's DACs are well-known and loved in Astell&Kern's digital audio players (DAPs), but due to the small size of the USB DAC dongle and the challenges of amp design, it has proven difficult to implement the DAC chip into the USB DAC Cable lineup until now. The AK4493S DAC from AKM that is used in the HC4 is enhanced with better noise control, lower power design, and ultra-precise amp design technology, delivering an exceptionally high-quality Hi-Fi audio signal. It also supports Native DSD 256 and up to 32bit/384kHz to handle any high-quality audio source, allowing you to experience the high-grade sound quality that Astell&Kern delivers with every product.
Dual Balanced and Unbalanced Headphone Outputs
The AK HC4 boasts dual headphone outputs, featuring both 3.5mm (unbalanced) and 4.4mm (balanced) jacks, catering to a wide range of Hi-Fi IEMs and headphones without requiring adapters or extra cables. With a high output of 3Vrms, the 4.4mm balanced output optimizes performance for sensitive headphones and IEMs, ensuring clear channel separation and minimal noise. Meanwhile, the 3.5mm unbalanced output, delivering 2Vrms, is compatible with most existing IEMs and headphones, allowing you to fully immerse yourself in your favorite audio experiences.
Digital Audio Remaster Technology for Even More Vivid Original Sound
The AK HC4 comes equipped with Digital Audio Remaster (DAR) technology, previously exclusive to Astell&Kern's latest digital audio players. DAR upsamples the sample rate of the sound source beyond its original format limits, resulting in a higher sample rate for more refined playback. This enhancement delivers a delicate, analog-like original sound, enriching your listening experience with the subtle nuances and richness of the music. The DAR slide key, conveniently located on the side of the product, provides an intuitive selection of DAR options, putting control at your fingertips.
* The DAR function can be selected On/Off depending on the sound source or your preference.
Better Audio for Your Gaming Sessions
In a world where gaming devices often favor UAC 1.0 connections over the more modern UAC 2.0, the AK HC4 bridges the gap by supporting both. Whether you're using a cutting-edge smartphone or a classic gaming console like PlayStation or Switch, the AK HC4 ensures compatibility across platforms. With its ability to handle both UAC 2.0 and UAC 1.0 connections, you can enjoy enhanced sound quality and low latency, immersing yourself fully in the gaming experience.
Noise-Free Rear Output Structure
The AK HC4 introduces a clever rear audio output design aimed at reducing noise interference. Unlike conventional USB DAC products where the DAC is typically housed within the USB terminal directly connected to the device for audio processing and output, the AK HC4 takes a different approach. By strategically positioning the DAC at the rear of the device, away from the potential sources of electrical noise, it ensures cleaner and more pristine audio transmission. This innovative design choice underscores Astell&Kern's commitment to delivering uncompromised sound quality, even in challenging audio environments.
Dual Noise Shielded Cable
To ensure seamless compatibility with both Android and iOS devices, the AK HC4 boasts an interchangeable cable supporting Type-C (USB-C) and Lightning (Apple) connections, eliminating the need for additional adapters. Featuring a dual shielded design, this cable is engineered to minimize noise and preserve the original sound quality. Its copper core wire is coated with tin to prevent corrosion and enhance tensile strength for increased durability. Furthermore, the cable is encased in an aluminum film to provide an extra layer of shielding against noise interference. To address the primary concern in audio, the power cable is surrounded by additional shielding, while the tin-coated copper wire is meticulously woven to further reduce noise interference. Finished with a fabric jacket over the TPE jacket, the cable not only ensures enhanced durability but also offers a sleek aesthetic appeal.
LED for real-time indication
AK HC4 has an LED indicator located on the front, that displays song details and USB Connection.
Standby : White / PCM : Red / DSD : Blue / UAC1.0 : Green
* When connected to UAC 1.0, the LED is fixed green.
Design Concept
The AK HC4 embodies Astell&Kern's design ethos of Light and Shadow, boasting a compact yet meticulously crafted form that reflects simplicity and sophistication. With a unibody structure, the device features minimal bonding lines, ensuring a sleek and seamless appearance. Despite accommodating both 3.5mm and 4.4mm Dual Output, its design minimizes any sense of bulkiness associated with its size. Notably, the symmetrical front edge line draws focus to the center, creating a balanced aesthetic. The concave lines on the side enhance grip and ergonomics, offering a comfortable user experience tailored to the natural contours of the hand. Furthermore, the keys on the sides feature raised ends or embossed dots, allowing for intuitive operation with just the fingertips.
About Astell&Kern:
Astell&Kern is a renowned brand at the forefront of the high-resolution audio industry, specializing in premium music players, DACs, and amplifiers. With a diverse lineup including the flagship A&ultima SP3000 and the versatile Kann Alpha, Astell&Kern offers cutting-edge technology and exquisite craftsmanship to audiophiles worldwide. Featuring dual DACs, Quad DACs, MQS support, and Bluetooth connectivity, their devices deliver unparalleled sound quality and versatility. The a&futura series, such as the Acro CA1000T, showcases Astell&Kern's commitment to innovation, while accessories like leather cases and high-resolution LCD screens complement their all-in-one audio systems. Whether it's portable music players like the Kann Ultra or in-ear monitors, Astell&Kern products redefine the boundaries of audio technology excellence, blending stainless steel durability with Wi-Fi connectivity and microSD expansion for a truly immersive listening experience.
What's in the Box?
- Astell&Kern HC4 DAC
- USB-C to USB-C Cable
- USB-C to Lightning Cable
FAQ
What are the advantages of having both 3.5mm and 4.4mm dual outputs on the Astell&Kern HC4?
The dual outputs provide compatibility with a wide range of headphones and IEMs, allowing users to experience high-quality audio with their preferred connection type.
How does the AKM AK4493S DAC contribute to the audio quality of the Astell&Kern HC4?
The AK4493S DAC ensures exceptional audio performance, delivering clean and detailed sound reproduction for an immersive listening experience.
What is DAR (Digital Audio Remaster) technology, and how does it enhance audio playback on the Astell&Kern HC4?
DAR technology upsamples the sample rate of the audio source to go beyond the limits of the source format, resulting in refined and analog-like sound reproduction with subtle nuances and rich tones.
Can the Astell&Kern HC4 be used with iOS devices?
Yes, the Astell&Kern HC4 supports iOS devices, allowing users to enjoy high-quality audio on their iPhones and iPads.
What cables are included with the Astell&Kern HC4?
The HC4 includes both Type-C and Lightning connectors, providing flexibility and compatibility with various devices.
What is UAC1.0 support, and how does it benefit gaming systems?
UAC1.0 support ensures compatibility with gaming systems, allowing users to experience low-latency and enhanced sound quality for an immersive gaming experience.
Is the Astell&Kern HC4 Roon Tested?
Yes, the Astell&Kern HC4 is Roon Tested, ensuring seamless integration and premium audio streaming capabilities with Roon-compatible devices and software.
| Parameter | Specification |
|---|---|
| Physical Specifications | |
| Model | AK HC4 |
| Body Color | Moon Silver |
| Body Material | Aluminum |
| Dimensions | 29.5mm [W] x 64.5mm [H] x 14.5mm [D] |
| Weight | Approx. 1.09oz (31g) |
| Technical Specifications | |
| DAC | AKM AK4493S |
| Sample Rate | PCM: 8kHz ~ 384kHz (8/16/24/32 bits per Sample) DSD Native: DSD64 / DSD128 / DSD256 (Stereo) |
| Output Level | Unbalanced: 2Vrms / Balanced: 3Vrms (No Load) |
| Output Impedance | 3.5mm: 0.9Ω / 4.4mm: 1.6Ω |
| Audio Specifications | |
| Frequency Response | 20Hz~20kHz: ±0.062dB (Unbalanced) / ±0.063dB (Balanced) 20Hz~70kHz: ±0.066dB (Unbalanced) / ±0.067dB (Balanced) |
| Signal to Noise Ratio | 118dB @ 1kHz (Unbalanced & Balanced) |
| Crosstalk | -134dB @ 1kHz (Unbalanced) / -136dB @ 1kHz (Balanced) |
| THD+N | 0.0005% @ 1kHz (Unbalanced) / 0.0009% @ 1kHz (Balanced) |
| IMD SMPTE | 0.0005% (Unbalanced) / 0.0004% (Balanced) |
| Connectivity Specifications | |
| Input | USB Type-C (Supports UAC 1.0 and UAC 2.0) |
| Output | 3.5mm (Unbalanced), 4.4mm (Balanced, 5-pole only) |